Checkerwork eos regenerative chambers



F. R. M GEE CHECKERWORK FOR REGENERATIVE CHAMBERS Filed Aug- 6, 1926 3 Sheets-Sheet 1 Y lawyer:

#568 I F64/VAE M 655, @W M 0 Oct. 23, 1928, 1,689,041

' F. R. M GEE CHECKERWORK FOR REGENERATIVE CHAMBERS Filed Aug. 6, 1926 5 Sheets-Sheet 2 W l6 /6 a I Vr'zfinesses 12808 H 2i.

FE 4/VAE M 655;

Oct. 23, 1928 1,689,041

F. R. MCGEE CHEGKERWORK FOR REGENERATIVE CHAMBERS Filed Aug. 6, 1926 5 Sheets-Sheet I; 12g 6i Patented Get. 2S, 1928.

UNITED TATES FRANK R. MCGEE, OF STEUBENVILLE, OHIO.

CI-IECKERWORK FOR REGENERATIVE CHAMBERS.

Application filed. August 6, 1926.

This invention relates to regenerative chambers and more particularly to checkerwork for such chambers, and has for one of its objects the provision of a novel form of checkerwork in which an even distribution of is had over the entire checkerwork thereby providing eliicient operation.

Another object is to provide a novel form of checkerwork from which the dust may be readily removed while the chambers are in operation.

Another object is to provide a checkerwork which will, due to its comparatively simple construction, have a lower installation and maintenance cost.

Another object is to provide a checkerwork having the novel design, construction and combination of parts hereinafter described and illustrated in the accompanying drawings.

In the drawings Figure 1 is a plan of a checkerwork adapted for use in a hot blast stove or the like, constructed in accordance with this invention.

Figures 2 and 3 are sectional elevations taken on the lines II-II and IIIIII, respectively, of Figure 1.

Figure 4 is a plan of a slightly modified form of checkerwork also adapted for use in a hot blast stove and constructed in accordance with this invention.

Figure 5 is a sectional elevation on the line V-V of Figure 4.

Figure 6 is a plan of a still further moditied form of checkerwork particularly adapted for use in regenerative chambers of open hearth furnaces.

Figures 7 and 8 are sectional elevations on the lines VIIVH and VIII-VIII of Figure 6.

Referring more particularly to Figures 1 to 3 of the drawings, the numeral 2 designates the shell of a hot blast stove or other regenerative chamber enclosing a checkerwork A.

The checkerwork A is composed of a plurality of vertically disposed horizontally spaced, parallel walls 3 composed of a series of bricks or tiles 5 laid up edgewise one on top of the other. The spaces between the walls 3 form gas channels 4 through which the heated gases and the gases to be heated ass.

Each of the tiles or bricks 5 have their corner edges cut away or shaped as at 6 to Serial No. 127,650.

form one fourth of a circular recess or openmg formed by the abutting corners of four HClJOlIllllg bricks. The recesses 7 are adapted to receive the reduced ends of combined spacing and baffle bricks or tiles 8, which are built into and extend from one wall 3 to the nextwall transversely of the gas channels 4.

The bricks 5 are each provided with a contrally arranged circular opening 9, which openings in each of the several walls are preferably in alinement so as to form transverse gas passageways between the several gas channels 4, thus permitting a transverse flow of the gases to equalize the flow and pressure of the gases in each of the gas channels.

Checkerwork constructed as above described prevents the forming of dead or cool areas due to the transverse flow between the gas channels, and also is more efiicient than checkerwork as heretofore generally constructed since there is less surfaces upon which dust may collect.

The checkerwork shown in Figures 4 and 5, which is designated generally by the letter B, and is adapted for use in a hot blast stove or the like, is composed of a plurality of vertical walls 10 and 12 arranged at right angles to each other and intersecting to form rectangular or square gas channels 13.

The walls 10 and 12 are each composed of a series of bricks or tiles 14 laid edgewise, one 011 top of the other. The bricks or tiles 14 have their end faces beveled from each side at approximately ninety degrees, as at 15, so that the ends of four bricks may be interlocked in forming the intersecting walls 10 and 12, and the top and bottom faces of the bricks or tiles are notched, as at 16, so that the notches of abutting bricks will form rectangular openings 16".

The walls 10 and 12 are spaced apart a distance equal to the width of the side face of one of the bricks or tiles 14, so the bricks or tiles of each wall are interlocked between the end faces of two abutting tiles of the two walls extending at right angles.

The walls 10 have combined spacing and battling tiles or bricks 17 built into the alternate horizontal rows of openings 16 and extending transversely of the gas channels 13, while the walls 12 have combined spacing and battling tiles 18 built into the alternate horizontal rows of openings 16 alternating with the rows of openings in which the tiles or bricks 17 are built, so that the tiles or bricks ill) l7 and 18 extend at right angles to each other, one above the other. The open or vacant openings 16 form gas passageways between the gas channels 13 to permit a transverse flow of the gases to equalize the flow and pressure of the gases in each oi the gas channels.

The arrangement of the combined spacing and battling bricks 17 serves to cause the gases to assume a staggered or twisting flow path through the gas channels 13, thereby causing a greater heat exchange than would be possible in a straight flow path.

The checkerwork oi Figures 6 to 8, designated generally by the letter O, is particularly adapted for use in the regenerative chambers of open hearth furnaces and the like, where a horizontal flow of the gases is desired. The checkerwork G comprises a dust chamber base composed of transverse, vertically disposed, spaced walls 20. The spaces 21 between the walls 20 form dust pockets into which the dust from the checker work is collected.

A plurality of vertically disposed, longitudinal checker walls 22 are supported on the walls 20 and spaced transversely from each other to "form gas channels 22 The walls 22 are composed of a series of bricks or tiles 23 laid up edgewise, one on top of the other. The bricks or tiles 23 have two opposite corners cut away on an angle, as at 24, and the other two opposite corners cut away on a curve forming a segment of a circle, as at 25, and the side edge of the brick intermediate the curved cut corners 25 is provided with a rectangular recess 26. The bricks or tiles 23 are laid up so that the angle cut corners 2a of four bricks abut to form square openings 27,,while the curved cut corners 25 abut to form circular openings 28, and the recesses 26 of two bricks abut to form a square opening 29. A plurality of combined spacing and ballle bricks or tiles extend transversely of the gas channels 22 and have their reduced ends inserted and built into the square openings 27. The round or circular openings 28 form communicating gas passageways between the gas channels 22, so that the pres sure and flow may be equalized in all the gas channels.

The round or circular openings 28 also are used as ports through which suitable cleaning tools or fluid pressure nozzles may be passed when cleaning the dust from the checker walls.

The checkerwork oi this invention has many advantages over the checkerwork as ordinarly constructed; it is easier to eonstruct, more durable; there are less surfaces to catch and retain dust; the gases may flow more readily therethrough; and the formation of cool or dead areas is entirely eliminated due to the provision of transverse flow passageways which permit the equalization of gas pressure and flow in the several gas channels.

lVhile I have shown and described certain specific embodiments of my invention, it will be understood that I do not wish to be limited thereto since various modifications have been and may be developed without departing from the scope of my invention as delined in the appended claims.

I claim:

1. A checkerwork for regenerative chambers comprising a plurality of vertically disposed spaced partition walls forming gas channels, said walls being composed of a plurality of individual tiles laid edgewise one on the other, said tiles being recessed to provide transverse openings in said walls, some of said openings remaining unobstructed to :t'orm gas passageways between said gas channels, and solid tiles extending transversely of said gas channels and having their ends built into others of said openings and serving to maintain said walls in spaced relation and to batlie the gases passing through said chan. nels.

2. A checkerwork for regenerative chambers comprising a plurality of vertically disposed spaced partition walls forining gas channels, said walls being composed of a plurality of individual tiles laid edgewise one on the other, said tiles being recessed to provide transverse openings in said walls, some of said openings remaining unobstructed to form gas passageways between said gas channels, and solid tiles extending transversely of said gas channels for maintaining said walls in spaced relation and battling the gases passing through said channels, said last named tiles comprising a body portion and reduced end portions forming shoulders at each end of said body portion, said last named tiles having their reduced end portions built into others of said openings and their shoulders abutting said Walls.

8. A checker-work for regenerative chambers comprising a plurality of vertically disposed spaced partition walls forming gas channels, said walls being composed of a plurality of individual tiles laid edgewise one on the other, said tiles being recessed at their centers to provide transverse openings therethrough and having their corner portions recessed so that the corners of abutting tiles will form other openings, and solid tiles extending transversely of said gas channels for maintaining said walls in spaced relation and for ba liing the gases passing through said channels, said last named tiles comprising a body portion and reduced end portions forming shoulders at each end of said body portion, and said end portions being builtinto said last named openings so that said shoulders abut said walls.

4-. A checkerwork for regenerative chambers comprising a plurality of vertically dis posed spaced partition Walls forming gas channels, said Walls being composed of a plurality or" individual tiles laid edgeWise one on the other, said tiles being provided With circular recesses at their centers forming transverse circular openings through said Walls, said tiles also having their corner portions recessed in the form of a segment of a circle so that the corners of abutting tiles will form other circular openings, and solid tiles extending transversely of said gas channels for maintaining said Walls in spaced relation and for bafiiing the gases passing through said channels, said last named tiles comprising a body portion circular in cross-section and reduced circular end portions forming shoulders at each end of said body portion, said end portions being built into said last named circular openings, and said shoulders being abutted against the side faces of said Wall.

In testimony whereof, I have hereunto set my hand.

FRANK R. MCGEE. 

